1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2003 Hidetoshi Shimokawa
5 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the acknowledgement as bellow:
18 *
19 * This product includes software developed by K. Kobayashi and H. Shimokawa
20 *
21 * 4. The name of the author may not be used to endorse or promote products
22 * derived from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
32 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
33 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 #include <sys/cdefs.h>
38 #include <sys/param.h>
39 #include <sys/conf.h>
40 #include <sys/eventhandler.h>
41 #include <sys/jail.h>
42 #include <sys/kernel.h>
43 #include <sys/kthread.h>
44 #include <sys/malloc.h>
45 #include <sys/module.h>
46 #include <sys/sysctl.h>
47 #include <sys/systm.h>
48
49 #include <sys/kdb.h>
50 #include <sys/bus.h> /* used by smbus and newbus */
51 #include <machine/bus.h>
52
53 #include <dev/firewire/firewire.h>
54 #include <dev/firewire/firewirereg.h>
55 #include <dev/firewire/fwmem.h>
56 #include <dev/firewire/iec13213.h>
57 #include <dev/firewire/iec68113.h>
58
59 struct crom_src_buf {
60 struct crom_src src;
61 struct crom_chunk root;
62 struct crom_chunk vendor;
63 struct crom_chunk hw;
64 };
65
66 int firewire_debug = 0, try_bmr = 1, hold_count = 0;
67 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
68 "FireWire driver debug flag");
69 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
70 "FireWire Subsystem");
71 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
72 "Try to be a bus manager");
73 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
74 "Number of count of bus resets for removing lost device information");
75
76 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
77 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
78
79 #define FW_MAXASYRTY 4
80
81 devclass_t firewire_devclass;
82
83 static void firewire_identify(driver_t *, device_t);
84 static int firewire_probe(device_t);
85 static int firewire_attach(device_t);
86 static int firewire_detach(device_t);
87 static int firewire_resume(device_t);
88 static void firewire_xfer_timeout(void *, int);
89 static device_t firewire_add_child(device_t, u_int, const char *, int);
90 static void fw_try_bmr(void *);
91 static void fw_try_bmr_callback(struct fw_xfer *);
92 static void fw_asystart(struct fw_xfer *);
93 static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *);
94 static void fw_bus_probe(void *);
95 static void fw_attach_dev(struct firewire_comm *);
96 static void fw_bus_probe_thread(void *);
97 #ifdef FW_VMACCESS
98 static void fw_vmaccess (struct fw_xfer *);
99 #endif
100 static int fw_bmr (struct firewire_comm *);
101 static void fw_dump_hdr(struct fw_pkt *, char *);
102
103 static device_method_t firewire_methods[] = {
104 /* Device interface */
105 DEVMETHOD(device_identify, firewire_identify),
106 DEVMETHOD(device_probe, firewire_probe),
107 DEVMETHOD(device_attach, firewire_attach),
108 DEVMETHOD(device_detach, firewire_detach),
109 DEVMETHOD(device_suspend, bus_generic_suspend),
110 DEVMETHOD(device_resume, firewire_resume),
111 DEVMETHOD(device_shutdown, bus_generic_shutdown),
112
113 /* Bus interface */
114 DEVMETHOD(bus_add_child, firewire_add_child),
115
116 DEVMETHOD_END
117 };
118
119 char *linkspeed[] = {
120 "S100", "S200", "S400", "S800",
121 "S1600", "S3200", "undef", "undef"
122 };
123
124 static char *tcode_str[] = {
125 "WREQQ", "WREQB", "WRES", "undef",
126 "RREQQ", "RREQB", "RRESQ", "RRESB",
127 "CYCS", "LREQ", "STREAM", "LRES",
128 "undef", "undef", "PHY", "undef"
129 };
130
131 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
132 #define MAX_GAPHOP 15
133 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18,
134 21, 24, 26, 29, 32, 35, 37, 40};
135
136 static driver_t firewire_driver = {
137 "firewire",
138 firewire_methods,
139 sizeof(struct firewire_softc),
140 };
141
142 /*
143 * Lookup fwdev by node id.
144 */
145 struct fw_device *
fw_noderesolve_nodeid(struct firewire_comm * fc,int dst)146 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
147 {
148 struct fw_device *fwdev;
149
150 FW_GLOCK(fc);
151 STAILQ_FOREACH(fwdev, &fc->devices, link)
152 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
153 break;
154 FW_GUNLOCK(fc);
155
156 return fwdev;
157 }
158
159 /*
160 * Lookup fwdev by EUI64.
161 */
162 struct fw_device *
fw_noderesolve_eui64(struct firewire_comm * fc,struct fw_eui64 * eui)163 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
164 {
165 struct fw_device *fwdev;
166
167 FW_GLOCK(fc);
168 STAILQ_FOREACH(fwdev, &fc->devices, link)
169 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
170 break;
171 FW_GUNLOCK(fc);
172
173 if (fwdev == NULL)
174 return NULL;
175 if (fwdev->status == FWDEVINVAL)
176 return NULL;
177 return fwdev;
178 }
179
180 /*
181 * Async. request procedure for userland application.
182 */
183 int
fw_asyreq(struct firewire_comm * fc,int sub,struct fw_xfer * xfer)184 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
185 {
186 int err = 0;
187 struct fw_xferq *xferq;
188 int len;
189 struct fw_pkt *fp;
190 int tcode;
191 struct tcode_info *info;
192
193 if (xfer == NULL)
194 return EINVAL;
195 if (xfer->hand == NULL) {
196 printf("hand == NULL\n");
197 return EINVAL;
198 }
199 fp = &xfer->send.hdr;
200
201 tcode = fp->mode.common.tcode & 0xf;
202 info = &fc->tcode[tcode];
203 if (info->flag == 0) {
204 printf("invalid tcode=%x\n", tcode);
205 return EINVAL;
206 }
207
208 /* XXX allow bus explore packets only after bus rest */
209 if ((fc->status < FWBUSEXPLORE) &&
210 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
211 (fp->mode.rreqq.dest_lo < 0xf0000000) ||
212 (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
213 xfer->resp = EAGAIN;
214 xfer->flag = FWXF_BUSY;
215 return (EAGAIN);
216 }
217
218 if (info->flag & FWTI_REQ)
219 xferq = fc->atq;
220 else
221 xferq = fc->ats;
222 len = info->hdr_len;
223 if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
224 printf("send.pay_len > maxrec\n");
225 return EINVAL;
226 }
227 if (info->flag & FWTI_BLOCK_STR)
228 len = fp->mode.stream.len;
229 else if (info->flag & FWTI_BLOCK_ASY)
230 len = fp->mode.rresb.len;
231 else
232 len = 0;
233 if (len != xfer->send.pay_len) {
234 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
235 len, xfer->send.pay_len, tcode_str[tcode], tcode);
236 return EINVAL;
237 }
238
239 if (xferq->start == NULL) {
240 printf("xferq->start == NULL\n");
241 return EINVAL;
242 }
243 if (!(xferq->queued < xferq->maxq)) {
244 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
245 xferq->queued);
246 return EAGAIN;
247 }
248
249 xfer->tl = -1;
250 if (info->flag & FWTI_TLABEL) {
251 if (fw_get_tlabel(fc, xfer) < 0)
252 return EAGAIN;
253 }
254
255 xfer->resp = 0;
256 xfer->fc = fc;
257 xfer->q = xferq;
258
259 fw_asystart(xfer);
260 return err;
261 }
262
263 /*
264 * Wakeup blocked process.
265 */
266 void
fw_xferwake(struct fw_xfer * xfer)267 fw_xferwake(struct fw_xfer *xfer)
268 {
269 struct mtx *lock = &xfer->fc->wait_lock;
270
271 mtx_lock(lock);
272 xfer->flag |= FWXF_WAKE;
273 mtx_unlock(lock);
274
275 wakeup(xfer);
276 return;
277 }
278
279 int
fw_xferwait(struct fw_xfer * xfer)280 fw_xferwait(struct fw_xfer *xfer)
281 {
282 struct mtx *lock = &xfer->fc->wait_lock;
283 int err = 0;
284
285 mtx_lock(lock);
286 while ((xfer->flag & FWXF_WAKE) == 0)
287 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
288 mtx_unlock(lock);
289
290 return (err);
291 }
292
293 /*
294 * Async. request with given xfer structure.
295 */
296 static void
fw_asystart(struct fw_xfer * xfer)297 fw_asystart(struct fw_xfer *xfer)
298 {
299 struct firewire_comm *fc = xfer->fc;
300
301 /* Protect from interrupt/timeout */
302 FW_GLOCK(fc);
303 xfer->flag = FWXF_INQ;
304 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
305 #if 0
306 xfer->q->queued++;
307 #endif
308 FW_GUNLOCK(fc);
309 /* XXX just queue for mbuf */
310 if (xfer->mbuf == NULL)
311 xfer->q->start(fc);
312 return;
313 }
314
315 static void
firewire_identify(driver_t * driver,device_t parent)316 firewire_identify(driver_t *driver, device_t parent)
317 {
318 BUS_ADD_CHILD(parent, 0, "firewire", -1);
319 }
320
321 static int
firewire_probe(device_t dev)322 firewire_probe(device_t dev)
323 {
324 device_set_desc(dev, "IEEE1394(FireWire) bus");
325 return (0);
326 }
327
328 /* Just use a per-packet callout? */
329 static void
firewire_xfer_timeout(void * arg,int pending)330 firewire_xfer_timeout(void *arg, int pending)
331 {
332 struct firewire_comm *fc = (struct firewire_comm *)arg;
333 struct fw_xfer *xfer, *txfer;
334 struct timeval tv;
335 struct timeval split_timeout;
336 STAILQ_HEAD(, fw_xfer) xfer_timeout;
337 int i;
338
339 split_timeout.tv_sec = 0;
340 split_timeout.tv_usec = 200 * 1000; /* 200 msec */
341
342 microtime(&tv);
343 timevalsub(&tv, &split_timeout);
344 STAILQ_INIT(&xfer_timeout);
345
346 mtx_lock(&fc->tlabel_lock);
347 for (i = 0; i < nitems(fc->tlabels); i++) {
348 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
349 if ((xfer->flag & FWXF_SENT) == 0)
350 /* not sent yet */
351 break;
352 if (timevalcmp(&xfer->tv, &tv, >))
353 /* the rests are newer than this */
354 break;
355 device_printf(fc->bdev,
356 "split transaction timeout: tl=0x%x flag=0x%02x\n",
357 i, xfer->flag);
358 fw_dump_hdr(&xfer->send.hdr, "send");
359 xfer->resp = ETIMEDOUT;
360 xfer->tl = -1;
361 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
362 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
363 }
364 }
365 mtx_unlock(&fc->tlabel_lock);
366 fc->timeout(fc);
367
368 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
369 xfer->hand(xfer);
370 }
371
372 #define WATCHDOG_HZ 10
373 static void
firewire_watchdog(void * arg)374 firewire_watchdog(void *arg)
375 {
376 struct firewire_comm *fc;
377 static int watchdog_clock = 0;
378
379 fc = arg;
380
381 /*
382 * At boot stage, the device interrupt is disabled and
383 * We encounter a timeout easily. To avoid this,
384 * ignore clock interrupt for a while.
385 */
386 if (watchdog_clock > WATCHDOG_HZ * 15)
387 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
388 else
389 watchdog_clock++;
390
391 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
392 firewire_watchdog, fc);
393 }
394
395 /*
396 * The attach routine.
397 */
398 static int
firewire_attach(device_t dev)399 firewire_attach(device_t dev)
400 {
401 int unit;
402 struct firewire_softc *sc = device_get_softc(dev);
403 device_t pa = device_get_parent(dev);
404 struct firewire_comm *fc;
405
406 fc = device_get_softc(pa);
407 sc->fc = fc;
408 fc->status = FWBUSNOTREADY;
409
410 unit = device_get_unit(dev);
411 if (fc->nisodma > FWMAXNDMA)
412 fc->nisodma = FWMAXNDMA;
413
414 fwdev_makedev(sc);
415
416 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf),
417 M_FW, M_NOWAIT | M_ZERO);
418 if (fc->crom_src_buf == NULL) {
419 device_printf(fc->dev,
420 "%s: unable to allocate crom src buffer\n", __func__);
421 return ENOMEM;
422 }
423 fc->topology_map = malloc(sizeof(struct fw_topology_map),
424 M_FW, M_NOWAIT | M_ZERO);
425 if (fc->topology_map == NULL) {
426 device_printf(fc->dev, "%s: unable to allocate topology map\n",
427 __func__);
428 free(fc->crom_src_buf, M_FW);
429 return ENOMEM;
430 }
431 fc->speed_map = malloc(sizeof(struct fw_speed_map),
432 M_FW, M_NOWAIT | M_ZERO);
433 if (fc->speed_map == NULL) {
434 device_printf(fc->dev, "%s: unable to allocate speed map\n",
435 __func__);
436 free(fc->crom_src_buf, M_FW);
437 free(fc->topology_map, M_FW);
438 return ENOMEM;
439 }
440
441 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
442 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
443 CALLOUT_INIT(&fc->timeout_callout);
444 CALLOUT_INIT(&fc->bmr_callout);
445 CALLOUT_INIT(&fc->busprobe_callout);
446 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc);
447
448 callout_reset(&sc->fc->timeout_callout, hz,
449 firewire_watchdog, sc->fc);
450
451 /* create thread */
452 kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread,
453 0, 0, "fw%d_probe", unit);
454
455 /* Locate our children */
456 bus_generic_probe(dev);
457
458 /* launch attachement of the added children */
459 bus_generic_attach(dev);
460
461 /* bus_reset */
462 FW_GLOCK(fc);
463 fw_busreset(fc, FWBUSNOTREADY);
464 FW_GUNLOCK(fc);
465 fc->ibr(fc);
466
467 return 0;
468 }
469
470 /*
471 * Attach it as child.
472 */
473 static device_t
firewire_add_child(device_t dev,u_int order,const char * name,int unit)474 firewire_add_child(device_t dev, u_int order, const char *name, int unit)
475 {
476 device_t child;
477 struct firewire_softc *sc;
478
479 sc = device_get_softc(dev);
480 child = device_add_child(dev, name, unit);
481 if (child) {
482 device_set_ivars(child, sc->fc);
483 device_probe_and_attach(child);
484 }
485
486 return child;
487 }
488
489 static int
firewire_resume(device_t dev)490 firewire_resume(device_t dev)
491 {
492 struct firewire_softc *sc;
493
494 sc = device_get_softc(dev);
495 sc->fc->status = FWBUSNOTREADY;
496
497 bus_generic_resume(dev);
498
499 return (0);
500 }
501
502 /*
503 * Detach it.
504 */
505 static int
firewire_detach(device_t dev)506 firewire_detach(device_t dev)
507 {
508 struct firewire_softc *sc;
509 struct firewire_comm *fc;
510 struct fw_device *fwdev, *fwdev_next;
511 int err;
512
513 sc = device_get_softc(dev);
514 fc = sc->fc;
515 mtx_lock(&fc->wait_lock);
516 fc->status = FWBUSDETACH;
517 wakeup(fc);
518 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
519 printf("firewire probe thread didn't die\n");
520 mtx_unlock(&fc->wait_lock);
521
522 if (fc->arq != 0 && fc->arq->maxq > 0)
523 fw_drain_txq(fc);
524
525 if ((err = fwdev_destroydev(sc)) != 0)
526 return err;
527
528 if ((err = bus_generic_detach(dev)) != 0)
529 return err;
530
531 callout_stop(&fc->timeout_callout);
532 callout_stop(&fc->bmr_callout);
533 callout_stop(&fc->busprobe_callout);
534
535 /* XXX xfer_free and untimeout on all xfers */
536 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
537 fwdev = fwdev_next) {
538 fwdev_next = STAILQ_NEXT(fwdev, link);
539 free(fwdev, M_FW);
540 }
541 free(fc->topology_map, M_FW);
542 free(fc->speed_map, M_FW);
543 free(fc->crom_src_buf, M_FW);
544
545 mtx_destroy(&fc->tlabel_lock);
546 mtx_destroy(&fc->wait_lock);
547 return (0);
548 }
549
550 static void
fw_xferq_drain(struct fw_xferq * xferq)551 fw_xferq_drain(struct fw_xferq *xferq)
552 {
553 struct fw_xfer *xfer;
554
555 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
556 STAILQ_REMOVE_HEAD(&xferq->q, link);
557 #if 0
558 xferq->queued--;
559 #endif
560 xfer->resp = EAGAIN;
561 xfer->flag = FWXF_SENTERR;
562 fw_xfer_done(xfer);
563 }
564 }
565
566 void
fw_drain_txq(struct firewire_comm * fc)567 fw_drain_txq(struct firewire_comm *fc)
568 {
569 struct fw_xfer *xfer, *txfer;
570 STAILQ_HEAD(, fw_xfer) xfer_drain;
571 int i;
572
573 STAILQ_INIT(&xfer_drain);
574
575 FW_GLOCK(fc);
576 fw_xferq_drain(fc->atq);
577 fw_xferq_drain(fc->ats);
578 for (i = 0; i < fc->nisodma; i++)
579 fw_xferq_drain(fc->it[i]);
580 FW_GUNLOCK(fc);
581
582 mtx_lock(&fc->tlabel_lock);
583 for (i = 0; i < 0x40; i++)
584 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
585 if (firewire_debug)
586 printf("tl=%d flag=%d\n", i, xfer->flag);
587 xfer->tl = -1;
588 xfer->resp = EAGAIN;
589 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
590 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
591 }
592 mtx_unlock(&fc->tlabel_lock);
593
594 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
595 xfer->hand(xfer);
596 }
597
598 static void
fw_reset_csr(struct firewire_comm * fc)599 fw_reset_csr(struct firewire_comm *fc)
600 {
601 int i;
602
603 CSRARC(fc, STATE_CLEAR)
604 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
605 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
606 CSRARC(fc, NODE_IDS) = 0x3f;
607
608 CSRARC(fc, TOPO_MAP + 8) = 0;
609 fc->irm = -1;
610
611 fc->max_node = -1;
612
613 for (i = 2; i < 0x100 / 4 - 2; i++) {
614 CSRARC(fc, SPED_MAP + i * 4) = 0;
615 }
616 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
617 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
618 CSRARC(fc, RESET_START) = 0;
619 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
620 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
621 CSRARC(fc, CYCLE_TIME) = 0x0;
622 CSRARC(fc, BUS_TIME) = 0x0;
623 CSRARC(fc, BUS_MGR_ID) = 0x3f;
624 CSRARC(fc, BANDWIDTH_AV) = 4915;
625 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
626 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
627 CSRARC(fc, IP_CHANNELS) = (1U << 31);
628
629 CSRARC(fc, CONF_ROM) = 0x04 << 24;
630 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
631 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
632 1 << 28 | 0xff << 16 | 0x09 << 8;
633 CSRARC(fc, CONF_ROM + 0xc) = 0;
634
635 /* DV depend CSRs see blue book */
636 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
637 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
638
639 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14);
640 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
641 }
642
643 static void
fw_init_crom(struct firewire_comm * fc)644 fw_init_crom(struct firewire_comm *fc)
645 {
646 struct crom_src *src;
647
648 src = &fc->crom_src_buf->src;
649 bzero(src, sizeof(struct crom_src));
650
651 /* BUS info sample */
652 src->hdr.info_len = 4;
653
654 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
655
656 src->businfo.irmc = 1;
657 src->businfo.cmc = 1;
658 src->businfo.isc = 1;
659 src->businfo.bmc = 1;
660 src->businfo.pmc = 0;
661 src->businfo.cyc_clk_acc = 100;
662 src->businfo.max_rec = fc->maxrec;
663 src->businfo.max_rom = MAXROM_4;
664 #define FW_GENERATION_CHANGEABLE 2
665 src->businfo.generation = FW_GENERATION_CHANGEABLE;
666 src->businfo.link_spd = fc->speed;
667
668 src->businfo.eui64.hi = fc->eui.hi;
669 src->businfo.eui64.lo = fc->eui.lo;
670
671 STAILQ_INIT(&src->chunk_list);
672
673 fc->crom_src = src;
674 fc->crom_root = &fc->crom_src_buf->root;
675 }
676
677 static void
fw_reset_crom(struct firewire_comm * fc)678 fw_reset_crom(struct firewire_comm *fc)
679 {
680 struct crom_src_buf *buf;
681 struct crom_src *src;
682 struct crom_chunk *root;
683
684 buf = fc->crom_src_buf;
685 src = fc->crom_src;
686 root = fc->crom_root;
687
688 STAILQ_INIT(&src->chunk_list);
689
690 bzero(root, sizeof(struct crom_chunk));
691 crom_add_chunk(src, NULL, root, 0);
692 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
693 /* private company_id */
694 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
695 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
696 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
697 mtx_lock(&prison0.pr_mtx);
698 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
699 mtx_unlock(&prison0.pr_mtx);
700 }
701
702 /*
703 * Called after bus reset.
704 */
705 void
fw_busreset(struct firewire_comm * fc,uint32_t new_status)706 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
707 {
708 struct firewire_dev_comm *fdc;
709 struct crom_src *src;
710 device_t *devlistp;
711 uint32_t *newrom;
712 int i, devcnt;
713
714 FW_GLOCK_ASSERT(fc);
715 if (fc->status == FWBUSMGRELECT)
716 callout_stop(&fc->bmr_callout);
717
718 fc->status = new_status;
719 fw_reset_csr(fc);
720
721 if (fc->status == FWBUSNOTREADY)
722 fw_init_crom(fc);
723
724 fw_reset_crom(fc);
725
726 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
727 for (i = 0; i < devcnt; i++)
728 if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
729 fdc = device_get_softc(devlistp[i]);
730 if (fdc->post_busreset != NULL)
731 fdc->post_busreset(fdc);
732 }
733 free(devlistp, M_TEMP);
734 }
735
736 src = &fc->crom_src_buf->src;
737 /*
738 * If the old config rom needs to be overwritten,
739 * bump the businfo.generation indicator to
740 * indicate that we need to be reprobed
741 * See 1394a-2000 8.3.2.5.4 for more details.
742 * generation starts at 2 and rolls over at 0xF
743 * back to 2.
744 *
745 * A generation of 0 indicates a device
746 * that is not 1394a-2000 compliant.
747 * A generation of 1 indicates a device that
748 * does not change it's Bus Info Block or
749 * Configuration ROM.
750 */
751 #define FW_MAX_GENERATION 0xF
752 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
753 src = &fc->crom_src_buf->src;
754 crom_load(src, newrom, CROMSIZE);
755 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
756 /* Bump generation and reload. */
757 src->businfo.generation++;
758
759 /* Handle generation count wraps. */
760 if (src->businfo.generation < FW_GENERATION_CHANGEABLE)
761 src->businfo.generation = FW_GENERATION_CHANGEABLE;
762
763 /* Recalculate CRC to account for generation change. */
764 crom_load(src, newrom, CROMSIZE);
765 bcopy(newrom, fc->config_rom, CROMSIZE);
766 }
767 free(newrom, M_FW);
768 }
769
770 /* Call once after reboot */
fw_init(struct firewire_comm * fc)771 void fw_init(struct firewire_comm *fc)
772 {
773 int i;
774 #ifdef FW_VMACCESS
775 struct fw_xfer *xfer;
776 struct fw_bind *fwb;
777 #endif
778
779 fc->arq->queued = 0;
780 fc->ars->queued = 0;
781 fc->atq->queued = 0;
782 fc->ats->queued = 0;
783
784 fc->arq->buf = NULL;
785 fc->ars->buf = NULL;
786 fc->atq->buf = NULL;
787 fc->ats->buf = NULL;
788
789 fc->arq->flag = 0;
790 fc->ars->flag = 0;
791 fc->atq->flag = 0;
792 fc->ats->flag = 0;
793
794 STAILQ_INIT(&fc->atq->q);
795 STAILQ_INIT(&fc->ats->q);
796
797 for (i = 0; i < fc->nisodma; i++) {
798 fc->it[i]->queued = 0;
799 fc->ir[i]->queued = 0;
800
801 fc->it[i]->start = NULL;
802 fc->ir[i]->start = NULL;
803
804 fc->it[i]->buf = NULL;
805 fc->ir[i]->buf = NULL;
806
807 fc->it[i]->flag = FWXFERQ_STREAM;
808 fc->ir[i]->flag = FWXFERQ_STREAM;
809
810 STAILQ_INIT(&fc->it[i]->q);
811 STAILQ_INIT(&fc->ir[i]->q);
812 }
813
814 fc->arq->maxq = FWMAXQUEUE;
815 fc->ars->maxq = FWMAXQUEUE;
816 fc->atq->maxq = FWMAXQUEUE;
817 fc->ats->maxq = FWMAXQUEUE;
818
819 for (i = 0; i < fc->nisodma; i++) {
820 fc->ir[i]->maxq = FWMAXQUEUE;
821 fc->it[i]->maxq = FWMAXQUEUE;
822 }
823
824 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
825 CSRARC(fc, TOPO_MAP + 4) = 1;
826 CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
827 CSRARC(fc, SPED_MAP + 4) = 1;
828
829 STAILQ_INIT(&fc->devices);
830
831 /* Initialize Async handlers */
832 STAILQ_INIT(&fc->binds);
833 for (i = 0; i < 0x40; i++) {
834 STAILQ_INIT(&fc->tlabels[i]);
835 }
836
837 /* DV depend CSRs see blue book */
838 #if 0
839 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
840 CSRARC(fc, oPCR) = 0x8000007a;
841 for (i = 4; i < 0x7c/4; i += 4) {
842 CSRARC(fc, i + oPCR) = 0x8000007a;
843 }
844
845 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
846 CSRARC(fc, iPCR) = 0x803f0000;
847 for (i = 4; i < 0x7c/4; i += 4) {
848 CSRARC(fc, i + iPCR) = 0x0;
849 }
850 #endif
851
852 fc->crom_src_buf = NULL;
853
854 #ifdef FW_VMACCESS
855 xfer = fw_xfer_alloc();
856 if (xfer == NULL)
857 return;
858
859 fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT);
860 if (fwb == NULL) {
861 fw_xfer_free(xfer);
862 return;
863 }
864 xfer->hand = fw_vmaccess;
865 xfer->fc = fc;
866 xfer->sc = NULL;
867
868 fwb->start_hi = 0x2;
869 fwb->start_lo = 0;
870 fwb->addrlen = 0xffffffff;
871 fwb->xfer = xfer;
872 fw_bindadd(fc, fwb);
873 #endif
874 }
875
876 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \
877 ((fwb)->end < (addr)) ? 1 : 0)
878
879 /*
880 * To lookup bound process from IEEE1394 address.
881 */
882 struct fw_bind *
fw_bindlookup(struct firewire_comm * fc,uint16_t dest_hi,uint32_t dest_lo)883 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
884 {
885 u_int64_t addr;
886 struct fw_bind *tfw, *r = NULL;
887
888 addr = ((u_int64_t)dest_hi << 32) | dest_lo;
889 FW_GLOCK(fc);
890 STAILQ_FOREACH(tfw, &fc->binds, fclist)
891 if (BIND_CMP(addr, tfw) == 0) {
892 r = tfw;
893 break;
894 }
895 FW_GUNLOCK(fc);
896 return (r);
897 }
898
899 /*
900 * To bind IEEE1394 address block to process.
901 */
902 int
fw_bindadd(struct firewire_comm * fc,struct fw_bind * fwb)903 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
904 {
905 struct fw_bind *tfw, *prev = NULL;
906 int r = 0;
907
908 if (fwb->start > fwb->end) {
909 printf("%s: invalid range\n", __func__);
910 return EINVAL;
911 }
912
913 FW_GLOCK(fc);
914 STAILQ_FOREACH(tfw, &fc->binds, fclist) {
915 if (fwb->end < tfw->start)
916 break;
917 prev = tfw;
918 }
919 if (prev == NULL)
920 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
921 else if (prev->end < fwb->start)
922 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
923 else {
924 printf("%s: bind failed\n", __func__);
925 r = EBUSY;
926 }
927 FW_GUNLOCK(fc);
928 return (r);
929 }
930
931 /*
932 * To free IEEE1394 address block.
933 */
934 int
fw_bindremove(struct firewire_comm * fc,struct fw_bind * fwb)935 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
936 {
937 #if 0
938 struct fw_xfer *xfer, *next;
939 #endif
940 struct fw_bind *tfw;
941 int s;
942
943 s = splfw();
944 FW_GLOCK(fc);
945 STAILQ_FOREACH(tfw, &fc->binds, fclist)
946 if (tfw == fwb) {
947 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
948 goto found;
949 }
950
951 printf("%s: no such binding\n", __func__);
952 FW_GUNLOCK(fc);
953 splx(s);
954 return (1);
955 found:
956 #if 0
957 /* shall we do this? */
958 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
959 next = STAILQ_NEXT(xfer, link);
960 fw_xfer_free(xfer);
961 }
962 STAILQ_INIT(&fwb->xferlist);
963 #endif
964 FW_GUNLOCK(fc);
965
966 splx(s);
967 return 0;
968 }
969
970 int
fw_xferlist_add(struct fw_xferlist * q,struct malloc_type * type,int slen,int rlen,int n,struct firewire_comm * fc,void * sc,void (* hand)(struct fw_xfer *))971 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
972 int slen, int rlen, int n,
973 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
974 {
975 int i, s;
976 struct fw_xfer *xfer;
977
978 for (i = 0; i < n; i++) {
979 xfer = fw_xfer_alloc_buf(type, slen, rlen);
980 if (xfer == NULL)
981 return (i);
982 xfer->fc = fc;
983 xfer->sc = sc;
984 xfer->hand = hand;
985 s = splfw();
986 STAILQ_INSERT_TAIL(q, xfer, link);
987 splx(s);
988 }
989 return (n);
990 }
991
992 void
fw_xferlist_remove(struct fw_xferlist * q)993 fw_xferlist_remove(struct fw_xferlist *q)
994 {
995 struct fw_xfer *xfer, *next;
996
997 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
998 next = STAILQ_NEXT(xfer, link);
999 fw_xfer_free_buf(xfer);
1000 }
1001 STAILQ_INIT(q);
1002 }
1003 /*
1004 * dump packet header
1005 */
1006 static void
fw_dump_hdr(struct fw_pkt * fp,char * prefix)1007 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1008 {
1009 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1010 "src=0x%03x\n", prefix,
1011 fp->mode.hdr.dst & 0x3f,
1012 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1013 fp->mode.hdr.tcode, fp->mode.hdr.pri,
1014 fp->mode.hdr.src);
1015 }
1016
1017 /*
1018 * To free transaction label.
1019 */
1020 static void
fw_tl_free(struct firewire_comm * fc,struct fw_xfer * xfer)1021 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1022 {
1023 struct fw_xfer *txfer;
1024
1025 mtx_lock(&fc->tlabel_lock);
1026 if (xfer->tl < 0) {
1027 mtx_unlock(&fc->tlabel_lock);
1028 return;
1029 }
1030 /* make sure the label is allocated */
1031 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1032 if (txfer == xfer)
1033 break;
1034 if (txfer == NULL) {
1035 printf("%s: the xfer is not in the queue "
1036 "(tlabel=%d, flag=0x%x)\n",
1037 __FUNCTION__, xfer->tl, xfer->flag);
1038 fw_dump_hdr(&xfer->send.hdr, "send");
1039 fw_dump_hdr(&xfer->recv.hdr, "recv");
1040 kdb_backtrace();
1041 mtx_unlock(&fc->tlabel_lock);
1042 return;
1043 }
1044
1045 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1046 xfer->tl = -1;
1047 mtx_unlock(&fc->tlabel_lock);
1048 return;
1049 }
1050
1051 /*
1052 * To obtain XFER structure by transaction label.
1053 */
1054 static struct fw_xfer *
fw_tl2xfer(struct firewire_comm * fc,int node,int tlabel,int tcode)1055 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1056 {
1057 struct fw_xfer *xfer;
1058 int s = splfw();
1059 int req;
1060
1061 mtx_lock(&fc->tlabel_lock);
1062 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1063 if (xfer->send.hdr.mode.hdr.dst == node) {
1064 mtx_unlock(&fc->tlabel_lock);
1065 splx(s);
1066 KASSERT(xfer->tl == tlabel,
1067 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1068 /* extra sanity check */
1069 req = xfer->send.hdr.mode.hdr.tcode;
1070 if (xfer->fc->tcode[req].valid_res != tcode) {
1071 printf("%s: invalid response tcode "
1072 "(0x%x for 0x%x)\n", __FUNCTION__,
1073 tcode, req);
1074 return (NULL);
1075 }
1076
1077 if (firewire_debug > 2)
1078 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1079 return (xfer);
1080 }
1081 mtx_unlock(&fc->tlabel_lock);
1082 if (firewire_debug > 1)
1083 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1084 splx(s);
1085 return (NULL);
1086 }
1087
1088 /*
1089 * To allocate IEEE1394 XFER structure.
1090 */
1091 struct fw_xfer *
fw_xfer_alloc(struct malloc_type * type)1092 fw_xfer_alloc(struct malloc_type *type)
1093 {
1094 struct fw_xfer *xfer;
1095
1096 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1097 if (xfer == NULL)
1098 return xfer;
1099
1100 xfer->malloc = type;
1101 xfer->tl = -1;
1102
1103 return xfer;
1104 }
1105
1106 struct fw_xfer *
fw_xfer_alloc_buf(struct malloc_type * type,int send_len,int recv_len)1107 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1108 {
1109 struct fw_xfer *xfer;
1110
1111 xfer = fw_xfer_alloc(type);
1112 if (xfer == NULL)
1113 return (NULL);
1114 xfer->send.pay_len = send_len;
1115 xfer->recv.pay_len = recv_len;
1116 if (send_len > 0) {
1117 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1118 if (xfer->send.payload == NULL) {
1119 fw_xfer_free(xfer);
1120 return (NULL);
1121 }
1122 }
1123 if (recv_len > 0) {
1124 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1125 if (xfer->recv.payload == NULL) {
1126 if (xfer->send.payload != NULL)
1127 free(xfer->send.payload, type);
1128 fw_xfer_free(xfer);
1129 return (NULL);
1130 }
1131 }
1132 return (xfer);
1133 }
1134
1135 /*
1136 * IEEE1394 XFER post process.
1137 */
1138 void
fw_xfer_done(struct fw_xfer * xfer)1139 fw_xfer_done(struct fw_xfer *xfer)
1140 {
1141 if (xfer->hand == NULL) {
1142 printf("hand == NULL\n");
1143 return;
1144 }
1145
1146 if (xfer->fc == NULL)
1147 panic("fw_xfer_done: why xfer->fc is NULL?");
1148
1149 fw_tl_free(xfer->fc, xfer);
1150 xfer->hand(xfer);
1151 }
1152
1153 void
fw_xfer_unload(struct fw_xfer * xfer)1154 fw_xfer_unload(struct fw_xfer *xfer)
1155 {
1156
1157 if (xfer == NULL)
1158 return;
1159
1160 if (xfer->fc != NULL) {
1161 FW_GLOCK(xfer->fc);
1162 if (xfer->flag & FWXF_INQ) {
1163 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1164 xfer->flag &= ~FWXF_INQ;
1165 #if 0
1166 xfer->q->queued--;
1167 #endif
1168 }
1169 FW_GUNLOCK(xfer->fc);
1170
1171 /*
1172 * Ensure that any tlabel owner can't access this
1173 * xfer after it's freed.
1174 */
1175 fw_tl_free(xfer->fc, xfer);
1176 #if 1
1177 if (xfer->flag & FWXF_START)
1178 /*
1179 * This could happen if:
1180 * 1. We call fwohci_arcv() before fwohci_txd().
1181 * 2. firewire_watch() is called.
1182 */
1183 printf("fw_xfer_free FWXF_START\n");
1184 #endif
1185 }
1186 xfer->flag = FWXF_INIT;
1187 xfer->resp = 0;
1188 }
1189
1190 /*
1191 * To free IEEE1394 XFER structure.
1192 */
1193 void
fw_xfer_free_buf(struct fw_xfer * xfer)1194 fw_xfer_free_buf(struct fw_xfer *xfer)
1195 {
1196 if (xfer == NULL) {
1197 printf("%s: xfer == NULL\n", __func__);
1198 return;
1199 }
1200 fw_xfer_unload(xfer);
1201 if (xfer->send.payload != NULL)
1202 free(xfer->send.payload, xfer->malloc);
1203 if (xfer->recv.payload != NULL)
1204 free(xfer->recv.payload, xfer->malloc);
1205 free(xfer, xfer->malloc);
1206 }
1207
1208 void
fw_xfer_free(struct fw_xfer * xfer)1209 fw_xfer_free(struct fw_xfer *xfer)
1210 {
1211 if (xfer == NULL) {
1212 printf("%s: xfer == NULL\n", __func__);
1213 return;
1214 }
1215 fw_xfer_unload(xfer);
1216 free(xfer, xfer->malloc);
1217 }
1218
1219 void
fw_asy_callback_free(struct fw_xfer * xfer)1220 fw_asy_callback_free(struct fw_xfer *xfer)
1221 {
1222 #if 0
1223 printf("asyreq done flag=0x%02x resp=%d\n",
1224 xfer->flag, xfer->resp);
1225 #endif
1226 fw_xfer_free(xfer);
1227 }
1228
1229 /*
1230 * To configure PHY.
1231 */
1232 static void
fw_phy_config(struct firewire_comm * fc,int root_node,int gap_count)1233 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1234 {
1235 struct fw_xfer *xfer;
1236 struct fw_pkt *fp;
1237
1238 fc->status = FWBUSPHYCONF;
1239
1240 xfer = fw_xfer_alloc(M_FWXFER);
1241 if (xfer == NULL)
1242 return;
1243 xfer->fc = fc;
1244 xfer->hand = fw_asy_callback_free;
1245
1246 fp = &xfer->send.hdr;
1247 fp->mode.ld[1] = 0;
1248 if (root_node >= 0)
1249 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24;
1250 if (gap_count >= 0)
1251 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16;
1252 fp->mode.ld[2] = ~fp->mode.ld[1];
1253 /* XXX Dangerous, how to pass PHY packet to device driver */
1254 fp->mode.common.tcode |= FWTCODE_PHY;
1255
1256 if (firewire_debug)
1257 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1258 __func__, root_node, gap_count);
1259 fw_asyreq(fc, -1, xfer);
1260 }
1261
1262 /*
1263 * Dump self ID.
1264 */
1265 static void
fw_print_sid(uint32_t sid)1266 fw_print_sid(uint32_t sid)
1267 {
1268 union fw_self_id *s;
1269 s = (union fw_self_id *) &sid;
1270 if (s->p0.sequel) {
1271 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) {
1272 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1273 "p8:%d p9:%d p10:%d\n",
1274 s->p1.phy_id, s->p1.port3, s->p1.port4,
1275 s->p1.port5, s->p1.port6, s->p1.port7,
1276 s->p1.port8, s->p1.port9, s->p1.port10);
1277 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) {
1278 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1279 s->p2.phy_id, s->p2.port11, s->p2.port12,
1280 s->p2.port13, s->p2.port14, s->p2.port15);
1281 } else {
1282 printf("node:%d Unknown Self ID Page number %d\n",
1283 s->p1.phy_id, s->p1.sequence_num);
1284 }
1285 } else {
1286 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1287 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1288 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1289 s->p0.phy_speed, s->p0.contender,
1290 s->p0.power_class, s->p0.port0, s->p0.port1,
1291 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1292 }
1293 }
1294
1295 /*
1296 * To receive self ID.
1297 */
fw_sidrcv(struct firewire_comm * fc,uint32_t * sid,u_int len)1298 void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len)
1299 {
1300 uint32_t *p;
1301 union fw_self_id *self_id;
1302 u_int i, j, node, c_port = 0, i_branch = 0;
1303
1304 fc->sid_cnt = len / (sizeof(uint32_t) * 2);
1305 fc->max_node = fc->nodeid & 0x3f;
1306 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1307 fc->status = FWBUSCYMELECT;
1308 fc->topology_map->crc_len = 2;
1309 fc->topology_map->generation++;
1310 fc->topology_map->self_id_count = 0;
1311 fc->topology_map->node_count= 0;
1312 fc->speed_map->generation++;
1313 fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4;
1314 self_id = &fc->topology_map->self_id[0];
1315 for (i = 0; i < fc->sid_cnt; i++) {
1316 if (sid[1] != ~sid[0]) {
1317 device_printf(fc->bdev,
1318 "%s: ERROR invalid self-id packet\n", __func__);
1319 sid += 2;
1320 continue;
1321 }
1322 *self_id = *((union fw_self_id *)sid);
1323 fc->topology_map->crc_len++;
1324 if (self_id->p0.sequel == 0) {
1325 fc->topology_map->node_count++;
1326 c_port = 0;
1327 if (firewire_debug)
1328 fw_print_sid(sid[0]);
1329 node = self_id->p0.phy_id;
1330 if (fc->max_node < node)
1331 fc->max_node = self_id->p0.phy_id;
1332 /* XXX I'm not sure this is the right speed_map */
1333 fc->speed_map->speed[node][node] =
1334 self_id->p0.phy_speed;
1335 for (j = 0; j < node; j++) {
1336 fc->speed_map->speed[j][node] =
1337 fc->speed_map->speed[node][j] =
1338 min(fc->speed_map->speed[j][j],
1339 self_id->p0.phy_speed);
1340 }
1341 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1342 (self_id->p0.link_active && self_id->p0.contender))
1343 fc->irm = self_id->p0.phy_id;
1344 if (self_id->p0.port0 >= 0x2)
1345 c_port++;
1346 if (self_id->p0.port1 >= 0x2)
1347 c_port++;
1348 if (self_id->p0.port2 >= 0x2)
1349 c_port++;
1350 }
1351 if (c_port > 2)
1352 i_branch += (c_port - 2);
1353 sid += 2;
1354 self_id++;
1355 fc->topology_map->self_id_count++;
1356 }
1357 /* CRC */
1358 fc->topology_map->crc = fw_crc16(
1359 (uint32_t *)&fc->topology_map->generation,
1360 fc->topology_map->crc_len * 4);
1361 fc->speed_map->crc = fw_crc16(
1362 (uint32_t *)&fc->speed_map->generation,
1363 fc->speed_map->crc_len * 4);
1364 /* byteswap and copy to CSR */
1365 p = (uint32_t *)fc->topology_map;
1366 for (i = 0; i <= fc->topology_map->crc_len; i++)
1367 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1368 p = (uint32_t *)fc->speed_map;
1369 CSRARC(fc, SPED_MAP) = htonl(*p++);
1370 CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1371 /* don't byte-swap uint8_t array */
1372 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4);
1373
1374 fc->max_hop = fc->max_node - i_branch;
1375 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1376 fc->max_node + 1, fc->max_hop,
1377 (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1378 fc->irm, (fc->irm == fc->nodeid) ? " (me) " : "");
1379
1380 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1381 if (fc->irm == fc->nodeid) {
1382 fc->status = FWBUSMGRDONE;
1383 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1384 fw_bmr(fc);
1385 } else {
1386 fc->status = FWBUSMGRELECT;
1387 callout_reset(&fc->bmr_callout, hz / 8,
1388 fw_try_bmr, fc);
1389 }
1390 } else
1391 fc->status = FWBUSMGRDONE;
1392
1393 callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc);
1394 }
1395
1396 /*
1397 * To probe devices on the IEEE1394 bus.
1398 */
1399 static void
fw_bus_probe(void * arg)1400 fw_bus_probe(void *arg)
1401 {
1402 struct firewire_comm *fc;
1403 struct fw_device *fwdev;
1404 int s;
1405
1406 s = splfw();
1407 fc = arg;
1408 fc->status = FWBUSEXPLORE;
1409
1410 /* Invalidate all devices, just after bus reset. */
1411 if (firewire_debug)
1412 device_printf(fc->bdev, "%s:"
1413 "iterate and invalidate all nodes\n",
1414 __func__);
1415 STAILQ_FOREACH(fwdev, &fc->devices, link)
1416 if (fwdev->status != FWDEVINVAL) {
1417 fwdev->status = FWDEVINVAL;
1418 fwdev->rcnt = 0;
1419 if (firewire_debug)
1420 device_printf(fc->bdev, "%s:"
1421 "Invalidate Dev ID: %08x%08x\n",
1422 __func__, fwdev->eui.hi, fwdev->eui.lo);
1423 } else {
1424 if (firewire_debug)
1425 device_printf(fc->bdev, "%s:"
1426 "Dev ID: %08x%08x already invalid\n",
1427 __func__, fwdev->eui.hi, fwdev->eui.lo);
1428 }
1429 splx(s);
1430
1431 wakeup(fc);
1432 }
1433
1434 static int
fw_explore_read_quads(struct fw_device * fwdev,int offset,uint32_t * quad,int length)1435 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1436 uint32_t *quad, int length)
1437 {
1438 struct fw_xfer *xfer;
1439 uint32_t tmp;
1440 int i, error;
1441
1442 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) {
1443 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff,
1444 0xf0000000 | offset, &tmp, fw_xferwake);
1445 if (xfer == NULL)
1446 return (-1);
1447 fw_xferwait(xfer);
1448
1449 if (xfer->resp == 0)
1450 quad[i] = ntohl(tmp);
1451
1452 error = xfer->resp;
1453 fw_xfer_free(xfer);
1454 if (error)
1455 return (error);
1456 }
1457 return (0);
1458 }
1459
1460
1461 static int
fw_explore_csrblock(struct fw_device * fwdev,int offset,int recur)1462 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1463 {
1464 int err, i, off;
1465 struct csrdirectory *dir;
1466 struct csrreg *reg;
1467
1468 dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1469 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1470 (uint32_t *)dir, 1);
1471 if (err)
1472 return (-1);
1473
1474 offset += sizeof(uint32_t);
1475 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1476 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1477 (uint32_t *)reg, dir->crc_len);
1478 if (err)
1479 return (-1);
1480
1481 /* XXX check CRC */
1482
1483 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1484 if (fwdev->rommax < off)
1485 fwdev->rommax = off;
1486
1487 if (recur == 0)
1488 return (0);
1489
1490 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) {
1491 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1492 recur = 1;
1493 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1494 recur = 0;
1495 else
1496 continue;
1497
1498 off = offset + reg[i].val * sizeof(uint32_t);
1499 if (off > CROMSIZE) {
1500 printf("%s: invalid offset %d\n", __FUNCTION__, off);
1501 return (-1);
1502 }
1503 err = fw_explore_csrblock(fwdev, off, recur);
1504 if (err)
1505 return (-1);
1506 }
1507 return (0);
1508 }
1509
1510 static int
fw_explore_node(struct fw_device * dfwdev)1511 fw_explore_node(struct fw_device *dfwdev)
1512 {
1513 struct firewire_comm *fc;
1514 struct fw_device *fwdev, *pfwdev, *tfwdev;
1515 uint32_t *csr;
1516 struct csrhdr *hdr;
1517 struct bus_info *binfo;
1518 int err, node;
1519 uint32_t speed_test = 0;
1520
1521 fc = dfwdev->fc;
1522 csr = dfwdev->csrrom;
1523 node = dfwdev->dst;
1524
1525 /* First quad */
1526 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1527 if (err) {
1528 dfwdev->status = FWDEVINVAL;
1529 return (-1);
1530 }
1531 hdr = (struct csrhdr *)&csr[0];
1532 if (hdr->info_len != 4) {
1533 if (firewire_debug)
1534 device_printf(fc->bdev,
1535 "%s: node%d: wrong bus info len(%d)\n",
1536 __func__, node, hdr->info_len);
1537 dfwdev->status = FWDEVINVAL;
1538 return (-1);
1539 }
1540
1541 /* bus info */
1542 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1543 if (err) {
1544 dfwdev->status = FWDEVINVAL;
1545 return (-1);
1546 }
1547 binfo = (struct bus_info *)&csr[1];
1548 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1549 dfwdev->status = FWDEVINVAL;
1550 return (-1);
1551 }
1552
1553 if (firewire_debug)
1554 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1555 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1556 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1557 "generation(%d) link_spd(%d)\n",
1558 __func__, node,
1559 binfo->irmc, binfo->cmc, binfo->isc,
1560 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1561 binfo->max_rec, binfo->max_rom,
1562 binfo->generation, binfo->link_spd);
1563
1564 STAILQ_FOREACH(fwdev, &fc->devices, link)
1565 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1566 break;
1567 if (fwdev == NULL) {
1568 /* new device */
1569 fwdev = malloc(sizeof(struct fw_device), M_FW,
1570 M_NOWAIT | M_ZERO);
1571 if (fwdev == NULL) {
1572 device_printf(fc->bdev, "%s: node%d: no memory\n",
1573 __func__, node);
1574 return (-1);
1575 }
1576 fwdev->fc = fc;
1577 fwdev->eui = binfo->eui64;
1578 fwdev->dst = dfwdev->dst;
1579 fwdev->maxrec = dfwdev->maxrec;
1580 fwdev->status = dfwdev->status;
1581
1582 /*
1583 * Pre-1394a-2000 didn't have link_spd in
1584 * the Bus Info block, so try and use the
1585 * speed map value.
1586 * 1394a-2000 compliant devices only use
1587 * the Bus Info Block link spd value, so
1588 * ignore the speed map altogether. SWB
1589 */
1590 if (binfo->link_spd == FWSPD_S100 /* 0 */) {
1591 device_printf(fc->bdev, "%s: "
1592 "Pre 1394a-2000 detected\n", __func__);
1593 fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1594 } else
1595 fwdev->speed = binfo->link_spd;
1596 /*
1597 * Test this speed with a read to the CSRROM.
1598 * If it fails, slow down the speed and retry.
1599 */
1600 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1601 err = fw_explore_read_quads(fwdev, CSRROMOFF,
1602 &speed_test, 1);
1603 if (err) {
1604 device_printf(fc->bdev,
1605 "%s: fwdev->speed(%s) decremented due to negotiation\n",
1606 __func__, linkspeed[fwdev->speed]);
1607 fwdev->speed--;
1608 } else
1609 break;
1610
1611 }
1612
1613 /*
1614 * If the fwdev is not found in the
1615 * fc->devices TAILQ, then we will add it.
1616 */
1617 pfwdev = NULL;
1618 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1619 if (tfwdev->eui.hi > fwdev->eui.hi ||
1620 (tfwdev->eui.hi == fwdev->eui.hi &&
1621 tfwdev->eui.lo > fwdev->eui.lo))
1622 break;
1623 pfwdev = tfwdev;
1624 }
1625 if (pfwdev == NULL)
1626 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1627 else
1628 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1629 } else {
1630 fwdev->dst = node;
1631 fwdev->status = FWDEVINIT;
1632 /* unchanged ? */
1633 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1634 if (firewire_debug)
1635 device_printf(fc->dev,
1636 "node%d: crom unchanged\n", node);
1637 return (0);
1638 }
1639 }
1640
1641 bzero(&fwdev->csrrom[0], CROMSIZE);
1642
1643 /* copy first quad and bus info block */
1644 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1645 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1646
1647 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1648
1649 if (err) {
1650 if (firewire_debug)
1651 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1652 __func__, err);
1653 fwdev->status = FWDEVINVAL;
1654 fwdev->csrrom[0] = 0;
1655 }
1656 return (err);
1657
1658 }
1659
1660 /*
1661 * Find the self_id packet for a node, ignoring sequels.
1662 */
1663 static union fw_self_id *
fw_find_self_id(struct firewire_comm * fc,int node)1664 fw_find_self_id(struct firewire_comm *fc, int node)
1665 {
1666 uint32_t i;
1667 union fw_self_id *s;
1668
1669 for (i = 0; i < fc->topology_map->self_id_count; i++) {
1670 s = &fc->topology_map->self_id[i];
1671 if (s->p0.sequel)
1672 continue;
1673 if (s->p0.phy_id == node)
1674 return s;
1675 }
1676 return 0;
1677 }
1678
1679 static void
fw_explore(struct firewire_comm * fc)1680 fw_explore(struct firewire_comm *fc)
1681 {
1682 int node, err, s, i, todo, todo2, trys;
1683 char nodes[63];
1684 struct fw_device dfwdev;
1685 union fw_self_id *fwsid;
1686
1687 todo = 0;
1688 /* setup dummy fwdev */
1689 dfwdev.fc = fc;
1690 dfwdev.speed = 0;
1691 dfwdev.maxrec = 8; /* 512 */
1692 dfwdev.status = FWDEVINIT;
1693
1694 for (node = 0; node <= fc->max_node; node++) {
1695 /* We don't probe myself and linkdown nodes */
1696 if (node == fc->nodeid) {
1697 if (firewire_debug)
1698 device_printf(fc->bdev, "%s:"
1699 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1700 __func__, node, fc->nodeid, fc->max_node);
1701 continue;
1702 } else if (firewire_debug) {
1703 device_printf(fc->bdev, "%s:"
1704 "node(%d) fc->max_node(%d) found\n",
1705 __func__, node, fc->max_node);
1706 }
1707 fwsid = fw_find_self_id(fc, node);
1708 if (!fwsid || !fwsid->p0.link_active) {
1709 if (firewire_debug)
1710 device_printf(fc->bdev,
1711 "%s: node%d: link down\n",
1712 __func__, node);
1713 continue;
1714 }
1715 nodes[todo++] = node;
1716 }
1717
1718 s = splfw();
1719 for (trys = 0; todo > 0 && trys < 3; trys++) {
1720 todo2 = 0;
1721 for (i = 0; i < todo; i++) {
1722 dfwdev.dst = nodes[i];
1723 err = fw_explore_node(&dfwdev);
1724 if (err)
1725 nodes[todo2++] = nodes[i];
1726 if (firewire_debug)
1727 device_printf(fc->bdev,
1728 "%s: node %d, err = %d\n",
1729 __func__, node, err);
1730 }
1731 todo = todo2;
1732 }
1733 splx(s);
1734 }
1735
1736 static void
fw_bus_probe_thread(void * arg)1737 fw_bus_probe_thread(void *arg)
1738 {
1739 struct firewire_comm *fc;
1740
1741 fc = arg;
1742
1743 mtx_lock(&fc->wait_lock);
1744 while (fc->status != FWBUSDETACH) {
1745 if (fc->status == FWBUSEXPLORE) {
1746 mtx_unlock(&fc->wait_lock);
1747 fw_explore(fc);
1748 fc->status = FWBUSEXPDONE;
1749 if (firewire_debug)
1750 printf("bus_explore done\n");
1751 fw_attach_dev(fc);
1752 mtx_lock(&fc->wait_lock);
1753 }
1754 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1755 }
1756 mtx_unlock(&fc->wait_lock);
1757 kproc_exit(0);
1758 }
1759
1760 /*
1761 * To attach sub-devices layer onto IEEE1394 bus.
1762 */
1763 static void
fw_attach_dev(struct firewire_comm * fc)1764 fw_attach_dev(struct firewire_comm *fc)
1765 {
1766 struct fw_device *fwdev, *next;
1767 int i, err;
1768 device_t *devlistp;
1769 int devcnt;
1770 struct firewire_dev_comm *fdc;
1771
1772 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1773 next = STAILQ_NEXT(fwdev, link);
1774 if (fwdev->status == FWDEVINIT) {
1775 fwdev->status = FWDEVATTACHED;
1776 } else if (fwdev->status == FWDEVINVAL) {
1777 fwdev->rcnt++;
1778 if (firewire_debug)
1779 device_printf(fc->bdev, "%s:"
1780 "fwdev->rcnt(%d), hold_count(%d)\n",
1781 __func__, fwdev->rcnt, hold_count);
1782 if (fwdev->rcnt > hold_count) {
1783 /*
1784 * Remove devices which have not been seen
1785 * for a while.
1786 */
1787 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1788 link);
1789 free(fwdev, M_FW);
1790 }
1791 }
1792 }
1793
1794 err = device_get_children(fc->bdev, &devlistp, &devcnt);
1795 if (err == 0) {
1796 for (i = 0; i < devcnt; i++) {
1797 if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
1798 fdc = device_get_softc(devlistp[i]);
1799 if (fdc->post_explore != NULL)
1800 fdc->post_explore(fdc);
1801 }
1802 }
1803 free(devlistp, M_TEMP);
1804 }
1805
1806 return;
1807 }
1808
1809 /*
1810 * To allocate unique transaction label.
1811 */
1812 static int
fw_get_tlabel(struct firewire_comm * fc,struct fw_xfer * xfer)1813 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1814 {
1815 u_int dst, new_tlabel;
1816 struct fw_xfer *txfer;
1817 int s;
1818
1819 dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1820 s = splfw();
1821 mtx_lock(&fc->tlabel_lock);
1822 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1823 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1824 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1825 break;
1826 if (txfer == NULL) {
1827 fc->last_tlabel[dst] = new_tlabel;
1828 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1829 mtx_unlock(&fc->tlabel_lock);
1830 splx(s);
1831 xfer->tl = new_tlabel;
1832 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1833 if (firewire_debug > 1)
1834 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1835 return (new_tlabel);
1836 }
1837 mtx_unlock(&fc->tlabel_lock);
1838 splx(s);
1839
1840 if (firewire_debug > 1)
1841 printf("fw_get_tlabel: no free tlabel\n");
1842 return (-1);
1843 }
1844
1845 static void
fw_rcv_copy(struct fw_rcv_buf * rb)1846 fw_rcv_copy(struct fw_rcv_buf *rb)
1847 {
1848 struct fw_pkt *pkt;
1849 u_char *p;
1850 struct tcode_info *tinfo;
1851 u_int res, i, len, plen;
1852
1853 rb->xfer->recv.spd = rb->spd;
1854
1855 pkt = (struct fw_pkt *)rb->vec->iov_base;
1856 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1857
1858 /* Copy header */
1859 p = (u_char *)&rb->xfer->recv.hdr;
1860 bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1861 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1862 rb->vec->iov_len -= tinfo->hdr_len;
1863
1864 /* Copy payload */
1865 p = (u_char *)rb->xfer->recv.payload;
1866 res = rb->xfer->recv.pay_len;
1867
1868 /* special handling for RRESQ */
1869 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1870 p != NULL && res >= sizeof(uint32_t)) {
1871 *(uint32_t *)p = pkt->mode.rresq.data;
1872 rb->xfer->recv.pay_len = sizeof(uint32_t);
1873 return;
1874 }
1875
1876 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1877 return;
1878
1879 plen = pkt->mode.rresb.len;
1880
1881 for (i = 0; i < rb->nvec; i++, rb->vec++) {
1882 len = MIN(rb->vec->iov_len, plen);
1883 if (res < len) {
1884 device_printf(rb->fc->bdev, "%s:"
1885 " rcv buffer(%d) is %d bytes short.\n",
1886 __func__, rb->xfer->recv.pay_len, len - res);
1887 len = res;
1888 }
1889 bcopy(rb->vec->iov_base, p, len);
1890 p += len;
1891 res -= len;
1892 plen -= len;
1893 if (res == 0 || plen == 0)
1894 break;
1895 }
1896 rb->xfer->recv.pay_len -= res;
1897 }
1898
1899 /*
1900 * Generic packet receiving process.
1901 */
1902 void
fw_rcv(struct fw_rcv_buf * rb)1903 fw_rcv(struct fw_rcv_buf *rb)
1904 {
1905 struct fw_pkt *fp, *resfp;
1906 struct fw_bind *bind;
1907 int tcode;
1908 int oldstate;
1909 #if 0
1910 int i, len;
1911 {
1912 uint32_t *qld;
1913 int i;
1914 qld = (uint32_t *)buf;
1915 printf("spd %d len:%d\n", spd, len);
1916 for (i = 0; i <= len && i < 32; i+= 4) {
1917 printf("0x%08x ", ntohl(qld[i/4]));
1918 if ((i % 16) == 15) printf("\n");
1919 }
1920 if ((i % 16) != 15) printf("\n");
1921 }
1922 #endif
1923 fp = (struct fw_pkt *)rb->vec[0].iov_base;
1924 tcode = fp->mode.common.tcode;
1925 switch (tcode) {
1926 case FWTCODE_WRES:
1927 case FWTCODE_RRESQ:
1928 case FWTCODE_RRESB:
1929 case FWTCODE_LRES:
1930 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1931 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1932 if (rb->xfer == NULL) {
1933 device_printf(rb->fc->bdev, "%s: unknown response "
1934 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1935 __func__,
1936 tcode_str[tcode], tcode,
1937 fp->mode.hdr.src,
1938 fp->mode.hdr.tlrt >> 2,
1939 fp->mode.hdr.tlrt & 3,
1940 fp->mode.rresq.data);
1941 #if 0
1942 printf("try ad-hoc work around!!\n");
1943 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1944 (fp->mode.hdr.tlrt >> 2)^3);
1945 if (rb->xfer == NULL) {
1946 printf("no use...\n");
1947 return;
1948 }
1949 #else
1950 return;
1951 #endif
1952 }
1953 fw_rcv_copy(rb);
1954 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1955 rb->xfer->resp = EIO;
1956 else
1957 rb->xfer->resp = 0;
1958 /* make sure the packet is drained in AT queue */
1959 oldstate = rb->xfer->flag;
1960 rb->xfer->flag = FWXF_RCVD;
1961 switch (oldstate) {
1962 case FWXF_SENT:
1963 fw_xfer_done(rb->xfer);
1964 break;
1965 case FWXF_START:
1966 #if 0
1967 if (firewire_debug)
1968 printf("not sent yet tl=%x\n", rb->xfer->tl);
1969 #endif
1970 break;
1971 default:
1972 device_printf(rb->fc->bdev, "%s: "
1973 "unexpected flag 0x%02x\n", __func__,
1974 rb->xfer->flag);
1975 }
1976 return;
1977 case FWTCODE_WREQQ:
1978 case FWTCODE_WREQB:
1979 case FWTCODE_RREQQ:
1980 case FWTCODE_RREQB:
1981 case FWTCODE_LREQ:
1982 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1983 fp->mode.rreqq.dest_lo);
1984 if (bind == NULL) {
1985 device_printf(rb->fc->bdev, "%s: "
1986 "Unknown service addr 0x%04x:0x%08x %s(%x)"
1987 " src=0x%x data=%x\n",
1988 __func__,
1989 fp->mode.wreqq.dest_hi,
1990 fp->mode.wreqq.dest_lo,
1991 tcode_str[tcode], tcode,
1992 fp->mode.hdr.src,
1993 ntohl(fp->mode.wreqq.data));
1994
1995 if (rb->fc->status == FWBUSINIT) {
1996 device_printf(rb->fc->bdev,
1997 "%s: cannot respond(bus reset)!\n",
1998 __func__);
1999 return;
2000 }
2001 rb->xfer = fw_xfer_alloc(M_FWXFER);
2002 if (rb->xfer == NULL) {
2003 return;
2004 }
2005 rb->xfer->send.spd = rb->spd;
2006 rb->xfer->send.pay_len = 0;
2007 resfp = &rb->xfer->send.hdr;
2008 switch (tcode) {
2009 case FWTCODE_WREQQ:
2010 case FWTCODE_WREQB:
2011 resfp->mode.hdr.tcode = FWTCODE_WRES;
2012 break;
2013 case FWTCODE_RREQQ:
2014 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2015 break;
2016 case FWTCODE_RREQB:
2017 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2018 break;
2019 case FWTCODE_LREQ:
2020 resfp->mode.hdr.tcode = FWTCODE_LRES;
2021 break;
2022 }
2023 resfp->mode.hdr.dst = fp->mode.hdr.src;
2024 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2025 resfp->mode.hdr.pri = fp->mode.hdr.pri;
2026 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2027 resfp->mode.rresb.extcode = 0;
2028 resfp->mode.rresb.len = 0;
2029 /*
2030 rb->xfer->hand = fw_xferwake;
2031 */
2032 rb->xfer->hand = fw_xfer_free;
2033 if (fw_asyreq(rb->fc, -1, rb->xfer))
2034 fw_xfer_free(rb->xfer);
2035 return;
2036 }
2037 #if 0
2038 len = 0;
2039 for (i = 0; i < rb->nvec; i++)
2040 len += rb->vec[i].iov_len;
2041 #endif
2042 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2043 if (rb->xfer == NULL) {
2044 device_printf(rb->fc->bdev, "%s: "
2045 "Discard a packet for this bind.\n", __func__);
2046 return;
2047 }
2048 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2049 fw_rcv_copy(rb);
2050 rb->xfer->hand(rb->xfer);
2051 return;
2052 #if 0 /* shouldn't happen ?? or for GASP */
2053 case FWTCODE_STREAM:
2054 {
2055 struct fw_xferq *xferq;
2056
2057 xferq = rb->fc->ir[sub];
2058 #if 0
2059 printf("stream rcv dma %d len %d off %d spd %d\n",
2060 sub, len, off, spd);
2061 #endif
2062 if (xferq->queued >= xferq->maxq) {
2063 printf("receive queue is full\n");
2064 return;
2065 }
2066 /* XXX get xfer from xfer queue, we don't need copy for
2067 per packet mode */
2068 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2069 vec[0].iov_len);
2070 if (rb->xfer == NULL)
2071 return;
2072 fw_rcv_copy(rb)
2073 s = splfw();
2074 xferq->queued++;
2075 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2076 splx(s);
2077 sc = device_get_softc(rb->fc->bdev);
2078 if (SEL_WAITING(&xferq->rsel))
2079 selwakeuppri(&xferq->rsel, FWPRI);
2080 if (xferq->flag & FWXFERQ_WAKEUP) {
2081 xferq->flag &= ~FWXFERQ_WAKEUP;
2082 wakeup((caddr_t)xferq);
2083 }
2084 if (xferq->flag & FWXFERQ_HANDLER) {
2085 xferq->hand(xferq);
2086 }
2087 return;
2088 break;
2089 }
2090 #endif
2091 default:
2092 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2093 __func__, tcode);
2094 break;
2095 }
2096 }
2097
2098 /*
2099 * Post process for Bus Manager election process.
2100 */
2101 static void
fw_try_bmr_callback(struct fw_xfer * xfer)2102 fw_try_bmr_callback(struct fw_xfer *xfer)
2103 {
2104 struct firewire_comm *fc;
2105 int bmr;
2106
2107 if (xfer == NULL)
2108 return;
2109 fc = xfer->fc;
2110 if (xfer->resp != 0)
2111 goto error;
2112 if (xfer->recv.payload == NULL)
2113 goto error;
2114 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2115 goto error;
2116
2117 bmr = ntohl(xfer->recv.payload[0]);
2118 if (bmr == 0x3f)
2119 bmr = fc->nodeid;
2120
2121 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2122 fw_xfer_free_buf(xfer);
2123 fw_bmr(fc);
2124 return;
2125
2126 error:
2127 device_printf(fc->bdev, "bus manager election failed\n");
2128 fw_xfer_free_buf(xfer);
2129 }
2130
2131
2132 /*
2133 * To candidate Bus Manager election process.
2134 */
2135 static void
fw_try_bmr(void * arg)2136 fw_try_bmr(void *arg)
2137 {
2138 struct fw_xfer *xfer;
2139 struct firewire_comm *fc = arg;
2140 struct fw_pkt *fp;
2141 int err = 0;
2142
2143 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2144 if (xfer == NULL)
2145 return;
2146 xfer->send.spd = 0;
2147 fc->status = FWBUSMGRELECT;
2148
2149 fp = &xfer->send.hdr;
2150 fp->mode.lreq.dest_hi = 0xffff;
2151 fp->mode.lreq.tlrt = 0;
2152 fp->mode.lreq.tcode = FWTCODE_LREQ;
2153 fp->mode.lreq.pri = 0;
2154 fp->mode.lreq.src = 0;
2155 fp->mode.lreq.len = 8;
2156 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2157 fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2158 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2159 xfer->send.payload[0] = htonl(0x3f);
2160 xfer->send.payload[1] = htonl(fc->nodeid);
2161 xfer->hand = fw_try_bmr_callback;
2162
2163 err = fw_asyreq(fc, -1, xfer);
2164 if (err) {
2165 fw_xfer_free_buf(xfer);
2166 return;
2167 }
2168 return;
2169 }
2170
2171 #ifdef FW_VMACCESS
2172 /*
2173 * Software implementation for physical memory block access.
2174 * XXX:Too slow, useful for debug purpose only.
2175 */
2176 static void
fw_vmaccess(struct fw_xfer * xfer)2177 fw_vmaccess(struct fw_xfer *xfer)
2178 {
2179 struct fw_pkt *rfp, *sfp = NULL;
2180 uint32_t *ld = (uint32_t *)xfer->recv.buf;
2181
2182 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2183 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]),
2184 ntohl(ld[3]));
2185 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]),
2186 ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2187 if (xfer->resp != 0) {
2188 fw_xfer_free(xfer);
2189 return;
2190 }
2191 if (xfer->recv.buf == NULL) {
2192 fw_xfer_free(xfer);
2193 return;
2194 }
2195 rfp = (struct fw_pkt *)xfer->recv.buf;
2196 switch (rfp->mode.hdr.tcode) {
2197 /* XXX need fix for 64bit arch */
2198 case FWTCODE_WREQB:
2199 xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2200 xfer->send.len = 12;
2201 sfp = (struct fw_pkt *)xfer->send.buf;
2202 bcopy(rfp->mode.wreqb.payload,
2203 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s
2204 ntohs(rfp->mode.wreqb.len));
2205 sfp->mode.wres.tcode = FWTCODE_WRES;
2206 sfp->mode.wres.rtcode = 0;
2207 break;
2208 case FWTCODE_WREQQ:
2209 xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2210 xfer->send.len = 12;
2211 sfp->mode.wres.tcode = FWTCODE_WRES;
2212 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) =
2213 rfp->mode.wreqq.data;
2214 sfp->mode.wres.rtcode = 0;
2215 break;
2216 case FWTCODE_RREQB:
2217 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len,
2218 M_FW, M_NOWAIT);
2219 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2220 sfp = (struct fw_pkt *)xfer->send.buf;
2221 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2222 sfp->mode.rresb.payload,
2223 ntohs(rfp->mode.rreqb.len));
2224 sfp->mode.rresb.tcode = FWTCODE_RRESB;
2225 sfp->mode.rresb.len = rfp->mode.rreqb.len;
2226 sfp->mode.rresb.rtcode = 0;
2227 sfp->mode.rresb.extcode = 0;
2228 break;
2229 case FWTCODE_RREQQ:
2230 xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2231 xfer->send.len = 16;
2232 sfp = (struct fw_pkt *)xfer->send.buf;
2233 sfp->mode.rresq.data =
2234 *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2235 sfp->mode.wres.tcode = FWTCODE_RRESQ;
2236 sfp->mode.rresb.rtcode = 0;
2237 break;
2238 default:
2239 fw_xfer_free(xfer);
2240 return;
2241 }
2242 sfp->mode.hdr.dst = rfp->mode.hdr.src;
2243 xfer->dst = ntohs(rfp->mode.hdr.src);
2244 xfer->hand = fw_xfer_free;
2245
2246 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2247 sfp->mode.hdr.pri = 0;
2248
2249 fw_asyreq(xfer->fc, -1, xfer);
2250 /**/
2251 return;
2252 }
2253 #endif
2254
2255 /*
2256 * CRC16 check-sum for IEEE1394 register blocks.
2257 */
2258 uint16_t
fw_crc16(uint32_t * ptr,uint32_t len)2259 fw_crc16(uint32_t *ptr, uint32_t len)
2260 {
2261 uint32_t i, sum, crc = 0;
2262 int shift;
2263 len = (len + 3) & ~3;
2264 for (i = 0; i < len; i += 4) {
2265 for (shift = 28; shift >= 0; shift -= 4) {
2266 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2267 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
2268 }
2269 crc &= 0xffff;
2270 }
2271 return ((uint16_t) crc);
2272 }
2273
2274 /*
2275 * Find the root node, if it is not
2276 * Cycle Master Capable, then we should
2277 * override this and become the Cycle
2278 * Master
2279 */
2280 static int
fw_bmr(struct firewire_comm * fc)2281 fw_bmr(struct firewire_comm *fc)
2282 {
2283 struct fw_device fwdev;
2284 union fw_self_id *self_id;
2285 int cmstr;
2286 uint32_t quad;
2287
2288 /* Check to see if the current root node is cycle master capable */
2289 self_id = fw_find_self_id(fc, fc->max_node);
2290 if (fc->max_node > 0) {
2291 /* XXX check cmc bit of businfo block rather than contender */
2292 if (self_id->p0.link_active && self_id->p0.contender)
2293 cmstr = fc->max_node;
2294 else {
2295 device_printf(fc->bdev,
2296 "root node is not cycle master capable\n");
2297 /* XXX shall we be the cycle master? */
2298 cmstr = fc->nodeid;
2299 /* XXX need bus reset */
2300 }
2301 } else
2302 cmstr = -1;
2303
2304 device_printf(fc->bdev, "bus manager %d %s\n",
2305 CSRARC(fc, BUS_MGR_ID),
2306 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2307 if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2308 /* We are not the bus manager */
2309 return (0);
2310 }
2311
2312 /* Optimize gapcount */
2313 if (fc->max_hop <= MAX_GAPHOP)
2314 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2315 /* If we are the cycle master, nothing to do */
2316 if (cmstr == fc->nodeid || cmstr == -1)
2317 return 0;
2318 /* Bus probe has not finished, make dummy fwdev for cmstr */
2319 bzero(&fwdev, sizeof(fwdev));
2320 fwdev.fc = fc;
2321 fwdev.dst = cmstr;
2322 fwdev.speed = 0;
2323 fwdev.maxrec = 8; /* 512 */
2324 fwdev.status = FWDEVINIT;
2325 /* Set cmstr bit on the cycle master */
2326 quad = htonl(1 << 8);
2327 fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2328 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2329
2330 return 0;
2331 }
2332
2333 int
fw_open_isodma(struct firewire_comm * fc,int tx)2334 fw_open_isodma(struct firewire_comm *fc, int tx)
2335 {
2336 struct fw_xferq **xferqa;
2337 struct fw_xferq *xferq;
2338 int i;
2339
2340 if (tx)
2341 xferqa = &fc->it[0];
2342 else
2343 xferqa = &fc->ir[0];
2344
2345 FW_GLOCK(fc);
2346 for (i = 0; i < fc->nisodma; i++) {
2347 xferq = xferqa[i];
2348 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2349 xferq->flag |= FWXFERQ_OPEN;
2350 break;
2351 }
2352 }
2353 if (i == fc->nisodma) {
2354 printf("no free dma channel (tx=%d)\n", tx);
2355 i = -1;
2356 }
2357 FW_GUNLOCK(fc);
2358 return (i);
2359 }
2360
2361 static int
fw_modevent(module_t mode,int type,void * data)2362 fw_modevent(module_t mode, int type, void *data)
2363 {
2364 int err = 0;
2365 static eventhandler_tag fwdev_ehtag = NULL;
2366
2367 switch (type) {
2368 case MOD_LOAD:
2369 firewire_devclass = devclass_create("firewire");
2370 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2371 fwdev_clone, 0, 1000);
2372 break;
2373 case MOD_UNLOAD:
2374 if (fwdev_ehtag != NULL)
2375 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2376 break;
2377 case MOD_SHUTDOWN:
2378 break;
2379 default:
2380 return (EOPNOTSUPP);
2381 }
2382 return (err);
2383 }
2384
2385
2386 DRIVER_MODULE(firewire, fwohci, firewire_driver, fw_modevent, NULL);
2387 MODULE_VERSION(firewire, 1);
2388